Video: Former Vice President Joe Biden has entered the 2020 presidential campaign. Columnist Karen Tumulty argues that he must prove that he isn’t a politician of a different era. (Danielle Kunitz, Joshua Carroll/The Washington Post)
Washington • There is no surer way to convince people you are going nuts than to stand in front of a crowd and announce that you are not going nuts.
"I want to be clear: I'm not going nuts," Joe Biden declared at a campaign stop Friday as he struggled to identify the location of a speech he had just given.